Commit c07e1f20 authored Jul 15, 2023 by Thomas Zimmermann

fbdev: Document that framebuffer_alloc() returns zero'ed data



Most fbdev drivers depend on framebuffer_alloc() to initialize the
allocated memory to 0. Document this guarantee.

v3:
	* slightly reword the sentence (Miguel)

Suggested-by: Miguel Ojeda <ojeda@kernel.org>
Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Miguel Ojeda <ojeda@kernel.org>
Reviewed-by: Sui Jingfeng <suijingfeng@loongson.cn>
Cc: Helge Deller <deller@gmx.de>
Link: https://patchwork.freedesktop.org/patch/msgid/20230715185343.7193-19-tzimmermann@suse.de

parent 0444fa35

drivers/video/fbdev/core/fb_info.c

+2 −1

Original line number	Diff line number	Diff line
		@@ -13,7 +13,8 @@
		*
		* Creates a new frame buffer info structure. Also reserves @size bytes
		* for driver private data (info->par). info->par (if any) will be
		* aligned to sizeof(long).
		* aligned to sizeof(long). The new instances of struct fb_info and
		* the driver private data are both cleared to zero.
		*
		* Returns the new structure, or NULL if an error occurred.
		*